package com.project.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.cache.RedisCacheWriter;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
@EnableCaching //开启缓存
public class RedisConfig extends CachingConfigurerSupport {

    /**
     * retemplate相关配置
     *
     * @param factory
     * @return
     */
    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {

        RedisTemplate<String, Object> template = new RedisTemplate<>();
        // 配置连接工厂
        template.setConnectionFactory(factory);

        // 值采用json序列化
        template.setValueSerializer(valueSerializer());
        //使用StringRedisSerializer来序列化和反序列化redis的key值
        template.setKeySerializer(new StringRedisSerializer());

        // 设置hash key 和value序列化模式
        template.setHashKeySerializer(new StringRedisSerializer());
        template.setHashValueSerializer(valueSerializer());
        template.afterPropertiesSet();

        return template;
    }
    /**
      * 往容器中添加RedisCacheManager容器，并设置序列化方式
      * @param redisConnectionFactory
      * @return
   */
  @Bean
  public RedisCacheManager redisCacheManager(RedisConnectionFactory redisConnectionFactory) {
    RedisCacheWriter redisCacheWriter = RedisCacheWriter.nonLockingRedisCacheWriter(redisConnectionFactory);
    RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()
            .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(valueSerializer()));
    redisCacheConfiguration.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()));
    return new RedisCacheManager(redisCacheWriter, redisCacheConfiguration);
  }

  private RedisSerializer valueSerializer(){
      //使用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值（默认使用JDK的序列化方式）
      Jackson2JsonRedisSerializer jacksonSeial = new Jackson2JsonRedisSerializer(Object.class);

      ObjectMapper om = new ObjectMapper();
      // 指定要序列化的域，field,get和set,以及修饰符范围，ANY是都有包括private和public
      om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
      // 指定序列化输入的类型，类必须是非final修饰的，final修饰的类，比如String,Integer等会跑出异常
      om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
      jacksonSeial.setObjectMapper(om);
      return jacksonSeial;
  }

}